"Petroleum refinery" means any source engaged in producing gasoline, kerosene, distillate fuel oils, residual fuel oils, lubricants, or other products through distillation of petroleum, or through redistillation, cracking, or reforming of unfinished petroleum derivatives.
Ill. Admin. Code tit. 35, § 211.4630
Added at 17 Ill. Reg. 16504, effective September 27, 1993